ZEP 440C-G, Руководство по обслуживанию

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7
Unloader Valve
Unloader Valve Breakdown
20
21
22
6
4
12
13
14
13
23
18
17
9
27
2
10
4
26
3
15
16
4
5
8
19
7
1
7
25
24
*
*
*
*
*
*
*
*
*
*
*
*
*
*
Unloading Adjustment
1. Install an appropriate pressure gauge in pump head outlet. The gauge should have a range twice the
operating pressure.
2. Loosen nut (Item 19) and turn the knob (Item 20) counter clockwise until minimum spring tension.
3. Open the trigger gun, start the pump, and observe pressure gauge reading. Slowly tighten the knob.
4. Close and open the trigger gun to check unloading pressure and bypass function of the unloader valve.
The unloading pressure should not exceed operating pressure more than 400 PSI.
5. Lock the setting by tightening the nut (Item 19)
Note: Once the operating pressure is reached, turning the knob clockwise will increase the unloading pressure
only.
Specifications
Maximum Flow 7.8 GPM / 30 LPM
*Max Unloading Press. 3650 PSI / 251 BAR
**Max Unloading Press. 4200 PSI / 290 BAR
Maximum Temperature 190˚F / 88˚C
Weight 2.1 LBS / 0.91 KG
Bypass ¼ FNPT
Inlet & Discharge 3/8 FNPT
*P/N C07-03700 **P/N C07-03800
Repair Parts Package
*C07-03700K – Includes 1 of item #1, 1 of item #2, 1 of item #3, 3 of item
#4, 2 of item #7, 2 of item #13, 1 of item #14, 1 of item #27
C07-03700X,C07-03800X